_____ the different cultures, values and levels of economic development in China and the West, both sides should respect the diversity of their development paths.

 We have to keep       with the changing times.

Father went to his doctor for＿＿＿＿＿about his heart trouble．

The environmentalists said wild goats’ __________ on the vast grasslands was a good indication of the better environment.

The _________ from the top of the tower was very wonderful.